The only reason to have used getAccessory(aid) is to delete it, so the delete command is now invoked automatically. Function returns 0 on success (matching aid found) or -1 on fail (aid not found)
Method homeSpan.updateDatabase(boolean updateMDNS) recomputes database hash and compares with previous hash. If changed, config number is updated and saved in NVS along with new hash. If updateMDNS is true, a new "c#" MDNS record is also broadcast with the new config number. This triggers HomeKit to call for a database refresh. Method returns true if config number has changed, or false if it has not.
The "C" command computes a hash of the current database config and updates the config number if needed. If config number has changed, the MDNS "c#" record is updated and the new config number is rebroadcast. This triggers HomeKit to immediately request an update of the HAP database so that the changes can be shortly reflected in the Home App without the need to close any Client connections or reboot the device.
The config number logic has also been updated/fixed. Previously it would create a hash from the full HAP database, which includes the value of each characteristic. Thus, initial value changes of Characteristics, as a result of stored values in NVS, would cause an update to the config number upon reboot.
This is not problematic, but also not intended, as a change in value is not really a change in the database config. The new logic computes a hash of the database that EXCLUDES all Characteristic values.
Instead of creating a static configLog for display upon start-up, an info log will be generated based on real-time data whenever the 'i' CLI command is requested. This provides for more streamlined error-checking as well.
Rather than call homeSpan.poll() in the main Arduino loop() function, you can instead call homeSpan.start() at the end of the set-up function. This keeps the main Arduino loop() function free for user-defined code that will not block, and does not get blocked by, homeSpan.poll().
If using a dual-core processor, polling now occurs on core 0, instead of the core 1 (where all other Arduino stuff normally runs).
HomeSpan will throw a fatal error and halt processing if both homeSpan.poll() and homeSpan.start() are used in the same sketch.
Gregg